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CN209116631U - A kind of neon helium cryogenic gas cold energy recyclable device - Google Patents

A kind of neon helium cryogenic gas cold energy recyclable device Download PDF

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Publication number
CN209116631U
CN209116631U CN201821685667.XU CN201821685667U CN209116631U CN 209116631 U CN209116631 U CN 209116631U CN 201821685667 U CN201821685667 U CN 201821685667U CN 209116631 U CN209116631 U CN 209116631U
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CN
China
Prior art keywords
efferent duct
neon helium
water
air
cold energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201821685667.XU
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Chinese (zh)
Inventor
陈辉
王培正
林定标
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG HAITIAN GAS CO Ltd
Original Assignee
ZHEJIANG HAITIAN GAS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CN201821685667.XU priority Critical patent/CN209116631U/en
Application granted granted Critical
Publication of CN209116631U publication Critical patent/CN209116631U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04642Recovering noble gases from air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00Processes or apparatus using other separation and/or other processing means
    • F25J2205/30Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/34Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00Processes characterised by the type or other details of the product stream
    • F25J2215/30Helium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00Processes or apparatus involving steps for recycling of process streams
    • F25J2245/42Processes or apparatus involving steps for recycling of process streams the recycled stream being nitrogen

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

The utility model belongs to the technical field of air separation plant, in particular to a kind of neon helium cryogenic gas cold energy recyclable device, including air separation column, liquid air liquid nitrogen subcooler, main heat exchanger and water-cooling tower, the air separation column includes upper tower, lower tower and condenser/evaporator, condenser/evaporator is located between Shang Ta and lower tower, neon helium gas efferent duct is provided in the condenser/evaporator, dirty nitrogen efferent duct is provided with above the filler of the upper tower, dirty nitrogen efferent duct is merged into mixed gas efferent duct with neon helium efferent duct after liquid air liquid nitrogen subcooler, the mixed gas efferent duct is connected after passing through main heat exchanger with water-cooling tower, tie point is located at the lower section of water cooling tower packing.The cold energy of neon helium cryogenic gas cold energy recyclable device provided by the utility model, recycling neon helium cryogenic gas reduces the load of water cooler to reduce the loss of refrigeration capacity of air separation column for the heat exchange of raw air and the cooling of water-cooling tower.

Description

A kind of neon helium cryogenic gas cold energy recyclable device
Technical field
The utility model belongs to the technical field of air separation plant, in particular to a kind of neon helium cryogenic gas cold energy recycling dress It sets.
Background technique
Air separation plant is air to be become liquid by the method for compression depth of round freezing, then pass through using air as raw material It crosses rectifying and gradually separates the equipment for producing the inert gases such as oxygen, nitrogen and argon gas from liquid air.Air separation plant one As include multiple devices such as air separation column, liquid air liquid nitrogen subcooler, main heat exchanger and water-cooling tower.
Since (oxygen is 183 DEG C, nitrogen 196 well below oxygen and nitrogen for the condensing temperature of neon helium gas in air DEG C, neon is -246 DEG C, and helium is -266 DEG C), therefore the neon that the lower top of tower of existing air separation column has one that can not condense always Helium cryogenic gas occupies condenser/evaporator, and occupying for neon helium cryogenic gas causes the reduction of condenser/evaporator working efficiency, working When need continuously to discharge neon helium cryogenic gas, could evaporator be worked normally.For general air separation plant, often Hour about discharges 150Nm3Neon helium cryogenic gas, such discharge causes very big loss of refrigeration capacity.
Utility model content
The purpose of the utility model is to provide a kind of neon helium cryogenic gas cold energy recyclable devices, recycle neon helium cryogenic gas Cold energy reduces water cooler to reduce the loss of refrigeration capacity of air separation column for the heat exchange of raw air and the cooling of water-cooling tower Load.
Purpose of the utility model is realized as follows: a kind of neon helium cryogenic gas cold energy recyclable device, including air separation column, Liquid air liquid nitrogen subcooler, main heat exchanger and water-cooling tower, the air separation column include Shang Ta, lower tower and condenser/evaporator, condensation evaporation Device is located between Shang Ta and lower tower, and neon helium gas efferent duct, the filler top of the upper tower are provided in the condenser/evaporator It is provided with dirty nitrogen efferent duct, dirty nitrogen efferent duct is merged into mixed gas with neon helium gas efferent duct after liquid air liquid nitrogen subcooler Efferent duct, the mixed gas efferent duct are connected after passing through main heat exchanger with water-cooling tower, and tie point is located under water cooling tower packing Side.
Above-mentioned apparatus further includes air inlet duct, and air inlet duct is connected after passing through main heat exchanger with the bottom end of air separation column, Raw air in air inlet duct carries out heat with the cryogenic gas in mixed gas efferent duct in main heat exchanger and exchanges, and makes Obtaining raw air temperature reduces.
The top of above-mentioned upper tower is provided with nitrogen efferent duct, and nitrogen efferent duct sequentially passes through liquid air liquid nitrogen subcooler and master changes It is connected after hot device with nitrogen collection device, oxygen output tube is provided with above above-mentioned condenser/evaporator, oxygen output tube is successively It is connected after liquid air liquid nitrogen subcooler and main heat exchanger with oxygen collecting device.Nitrogen efferent duct and oxygen output tube and liquid air Liquid nitrogen carries out heat exchange in liquid air liquid nitrogen subcooler, and liquid air liquid nitrogen further cools down, and is allowed to lower than saturation temperature.Nitrogen is defeated Outlet pipe and oxygen output tube carry out heat with raw air in main heat exchanger and exchange, so that raw air temperature reduces.
Above-mentioned neon helium gas efferent duct is connected with neon helium gas evacuated tube and neon helium gas emptying valve.
Above-mentioned apparatus further includes the molecular sieve system of filter stock air.
Above-mentioned mixed gas efferent duct is connected with molecular sieve system and water-cooling tower respectively after passing through main heat exchanger, and a part is mixed The demutation that gas is used for molecular sieve is closed, a part of mixed gas is used for the cooling of water-cooling tower.
It is provided with water inlet pipe and spray head above above-mentioned water-cooling tower, is provided with outlet pipe below water-cooling tower.It is cooled Water flow through filler from top to bottom, cooled down by mixed gas.
Compared to the prior art the utility model, has the following beneficial effects:
1, the neon helium cryogenic gas being discharged in air separation column is introduced the cold end of the main heat exchanger of air separation plant by the utility model, It exchanges heat with raw air, so that raw air temperature reduces, and then recycles cold energy.
2, the neon helium gas after main heat exchanger re-heat is introduced water-cooling tower by the utility model, since neon helium gas is dry Pathogenic dryness body, so the continuous evaporation and diffusion of water molecule energy is into neon helium gas, and water vapor absorption vaporizes potential from water constantly Heat is taken away, water temperature is reduced, dry gas moisture absorption is the main reason for reducing water temperature.
3, the utility model reduces the loss of air separation column cooling capacity, reduces the load of water cooler, has significant warp Ji benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Appended drawing reference: 1, air separation column;2, liquid air liquid nitrogen subcooler;3, main heat exchanger;4, water-cooling tower;5, upper tower;6, lower tower; 7, condenser/evaporator;8, neon helium gas efferent duct;9, dirty nitrogen efferent duct;10, mixed gas efferent duct;11, air inlet duct; 12, nitrogen efferent duct;13, oxygen output tube;14, neon helium gas evacuated tube;15, neon helium gas empties valve;16, water inlet pipe; 17, spray head;18, outlet pipe.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing, referring to Fig. 1:
A kind of neon helium cryogenic gas cold energy recyclable device, including air separation column 1, liquid air liquid nitrogen subcooler 2,3 and of main heat exchanger Water-cooling tower 4, the air separation column 1 include upper tower 5, lower tower 6 and condenser/evaporator 7, condenser/evaporator 7 be located at upper tower 5 and lower tower 6 it Between, it is provided with neon helium gas efferent duct 8 in the condenser/evaporator 7, is provided with dirty nitrogen efferent duct above the filler of the upper tower 5 9, dirty nitrogen efferent duct 9 is merged into mixed gas efferent duct 10, institute with neon helium gas efferent duct 8 after liquid air liquid nitrogen subcooler 2 It states mixed gas efferent duct 10 to be connected after main heat exchanger 3 with water-cooling tower 4, tie point is located at the lower section of 4 filler of water-cooling tower.
Above-mentioned apparatus further includes air inlet duct 11, bottom end of the air inlet duct 11 after main heat exchanger 3 with air separation column 1 It is connected, the raw air in air inlet duct 11 carries out in main heat exchanger 3 with the cryogenic gas in mixed gas efferent duct 10 Heat exchange, so that raw air temperature reduces.
The top of above-mentioned upper tower 5 is provided with nitrogen efferent duct 12, and nitrogen efferent duct 12 sequentially passes through liquid air liquid nitrogen subcooler 2 It is connected with after main heat exchanger 3 with nitrogen collection device, the top of above-mentioned condenser/evaporator 7 is provided with oxygen output tube 13, oxygen Efferent duct 13 is connected after sequentially passing through liquid air liquid nitrogen subcooler 2 and main heat exchanger 3 with oxygen collecting device.Nitrogen efferent duct 12 It carries out heat in liquid air liquid nitrogen subcooler 2 with liquid air liquid nitrogen with oxygen output tube 13 to exchange, liquid air liquid nitrogen further cools down, and makes Be lower than saturation temperature.Nitrogen efferent duct 12 and oxygen output tube 13 carry out heat with raw air in main heat exchanger 3 and exchange, So that raw air temperature reduces.
Above-mentioned neon helium gas efferent duct 8 is connected with neon helium gas evacuated tube 14 and neon helium gas emptying valve 15, works as needs Valve vent gas is opened when emptying neon helium gas.
Above-mentioned apparatus further includes the molecular sieve system of filter stock air.
Above-mentioned mixed gas efferent duct 10 is connected with molecular sieve system and water-cooling tower 4 respectively after passing through main heat exchanger 3, and one Part mixed gas is used for the demutation of molecular sieve, and a part of mixed gas is used for the cooling of water-cooling tower 4.
Water inlet pipe 16 and spray head 17 are provided with above above-mentioned water-cooling tower, the lower section of water-cooling tower 4 is provided with outlet pipe 18. Cooled water flows through filler from top to bottom, is cooled down by mixed gas.
The course of work of the utility model is as follows: the raw air from air compressor is defeated after molecular sieve filtration It is sent to main heat exchanger 3 to carry out heat exchange and cool down, is passed into the bottom of air separation column 1 later, the processing through air separation column 1, product Nitrogen is discharged by top, and product oxygen is discharged by the top of condenser/evaporator 7, and dirty nitrogen is discharged by the top of upper tower 5, neon helium gas By being discharged in condenser/evaporator 7, product nitrogen gas and dirty nitrogen pass through liquid air liquid nitrogen subcooler 2 to the liquid air liquid for being circulated in air separation column 1 Nitrogen cools down, and product nitrogen gas, product oxygen, dirty nitrogen, neon helium gas cool down to raw air by main heat exchanger 3, it Product nitrogen gas, product oxygen carry out product collection afterwards, and dirty nitrogen and neon helium gas a part flow to molecular sieve and carry out again to molecular sieve Raw, the water that a part flows into the water cooled tower packing of 4 convection current of water-cooling tower cools down, and water of the water-cooling tower 4 by cooling is for sky later Cold tower uses.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model Within the scope of.

Claims (7)

1. a kind of neon helium cryogenic gas cold energy recyclable device, including air separation column (1), liquid air liquid nitrogen subcooler (2), main heat exchanger (3) and water-cooling tower (4), the air separation column (1) include upper tower (5), lower tower (6) and condenser/evaporator (7), condenser/evaporator (7) Between upper tower (5) He Xiata (6), which is characterized in that be provided with neon helium gas efferent duct in the condenser/evaporator (7) (8), dirty nitrogen efferent duct (9) is provided with above the filler of the upper tower (5), dirty nitrogen efferent duct (9) passes through liquid air liquid nitrogen subcooler (2) it is merged into mixed gas efferent duct (10) with neon helium gas efferent duct (8) afterwards, the mixed gas efferent duct (10) passes through master Heat exchanger (3) is connected with water-cooling tower (4) afterwards, and tie point is located at the lower section of water-cooling tower (4) filler.
2. a kind of neon helium cryogenic gas cold energy recyclable device according to claim 1, which is characterized in that described device is also wrapped It includes air inlet duct (11), air inlet duct (11) passes through main heat exchanger (3) and is connected afterwards with the bottom end of air separation column (1).
3. a kind of neon helium cryogenic gas cold energy recyclable device according to claim 1, which is characterized in that the upper tower (5) Top be provided with nitrogen efferent duct (12), nitrogen efferent duct (12) sequentially passes through liquid air liquid nitrogen subcooler (2) and main heat exchanger (3) it is connected afterwards with nitrogen collection device, is provided with oxygen output tube (13) above the condenser/evaporator (7), oxygen output Pipe (13) sequentially passes through liquid air liquid nitrogen subcooler (2) and main heat exchanger (3) is connected with oxygen collecting device afterwards.
4. a kind of neon helium cryogenic gas cold energy recyclable device according to claim 1, which is characterized in that the neon helium gas Efferent duct (8) is connected with neon helium gas evacuated tube (14) and neon helium gas emptying valve (15).
5. a kind of neon helium cryogenic gas cold energy recyclable device according to claim 1, which is characterized in that described device is also wrapped Include the molecular sieve system of filter stock air.
6. a kind of neon helium cryogenic gas cold energy recyclable device according to claim 5, which is characterized in that the mixed gas Efferent duct (10) is connected with molecular sieve system and water-cooling tower (4) respectively after passing through main heat exchanger.
7. a kind of neon helium cryogenic gas cold energy recyclable device according to claim 1, which is characterized in that the water-cooling tower (4) it is provided with water inlet pipe (16) and spray head (17) above, outlet pipe (18) are provided with below water-cooling tower (4).
CN201821685667.XU 2018-10-17 2018-10-17 A kind of neon helium cryogenic gas cold energy recyclable device Expired - Fee Related CN209116631U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821685667.XU CN209116631U (en) 2018-10-17 2018-10-17 A kind of neon helium cryogenic gas cold energy recyclable device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821685667.XU CN209116631U (en) 2018-10-17 2018-10-17 A kind of neon helium cryogenic gas cold energy recyclable device

Publications (1)

Publication Number Publication Date
CN209116631U true CN209116631U (en) 2019-07-16

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109297261A (en) * 2018-10-17 2019-02-01 浙江海天气体有限公司 A kind of neon helium cryogenic gas cold energy recyclable device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109297261A (en) * 2018-10-17 2019-02-01 浙江海天气体有限公司 A kind of neon helium cryogenic gas cold energy recyclable device
CN109297261B (en) * 2018-10-17 2023-06-30 浙江海畅气体股份有限公司 Neon helium low temperature gas cold energy recovery unit

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190716

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CF01 Termination of patent right due to non-payment of annual fee